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void kmp_pre(char x[],int m,int next[]){ int i=0,j; j=next[0]=-1; while(i=m){ ans++; j=next[j]; } } return ans; } 阅读全文
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F. Asya And Kittens time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output F. Asya And Kittens 阅读全文
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E. String Multiplication time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Roman and Denis 阅读全文
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D. Gourmet choice time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output D. Gourmet choice time 阅读全文